/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Copyright (C) 2025 OpenFOAM Foundation
     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.

    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.

    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.

Application
    specVelo_demo

Description

\*---------------------------------------------------------------------------*/

#include "fvCFD.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

int main(int argc, char *argv[])
{
    #include "setRootCase.H"
    #include "createTime.H"
    #include "createMesh.H"

    Info<< "Reading field U\n" << endl;
    volVectorField U
    (
        IOobject
        (
            "U",
            runTime.timeName(),
            // "0.2",
            mesh,
            IOobject::MUST_READ,
            IOobject::AUTO_WRITE
        ),
        mesh
    );

    // U = vector(666.0, 0, 0); // 编译通过；运行时，量纲检查不通过
    // U = {666.0, 0.0, 0.0}; // 编译不通过
    U[0] = vector(666.0, 0, 0); // 量纲检查通过
    U[1] = {666.0, 0.0, 0.0}; // 量纲检查通过，类似std::initializer_list

    Info << Foam::constant::mathematical::pi << endl;

    forAll(U, cellI){
        scalar U_x = Foam::sin(2.0 * Foam::constant::mathematical::pi * mesh.C()[cellI][0])
                    *Foam::sin(2.0 * Foam::constant::mathematical::pi * mesh.C()[cellI][1])
                    +1.0/(16.0*16.0)*Foam::sin(32.0 * Foam::constant::mathematical::pi * mesh.C()[cellI][0])
                    *Foam::sin(32.0 * Foam::constant::mathematical::pi * mesh.C()[cellI][1]);

        U[cellI] = {U_x, 0.0, 0.0};
    }
    U.write();

    // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

    Info<< nl << "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
        << "  ClockTime = " << runTime.elapsedClockTime() << " s"
        << nl << endl;

    Info<< "End\n" << endl;

    return 0;
}


// ************************************************************************* //
